One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,5)(4,7)(6,8)(9,10,14,12)(11,13,16,15)(17,18,21,24)(19,23,20,22)(25,26,28,30)(27,31,32,29)(2,3)(4,8)(9,11,14,16)(10,15,12,13)(19,20)(22,23)(25,26,28,30)(27,29,32,31)(4,8)(6,7)(11,16)(13,15)(17,19,21,20)(18,22,24,23)(25,27)(26,29)(28,32)(30,31)(1,3,5,2)(4,6,8,7)(9,12,14,10)(11,15,16,13)(17,20,21,19)(18,23,24,22)(25,26)(27,29)(28,30)(31,32)(1,4,5,8)(2,6,3,7)(9,13,14,15)(10,11,12,16)(17,18)(19,22)(20,23)(21,24)(25,27)(26,29)(28,32)(30,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.